Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Iwańkowicz, R." wg kryterium: Autor

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-12 z 12
    Tytuł:
    Optymalizacja floty zbiornikowców do przewozu gazu skroplonego oraz harmonogramu jej kursowania
    Optimisation of the lng-tankers fleet and the plying schedule
    Autorzy:
    Iwańkowicz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/395483.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    planowanie zaopatrzenia
    optymalizacja
    gaz skroplony
    flota zbiornikowców
    terminal w Świnoujściu
    supply scheduling
    optimisation
    liquefield natural gas
    tankers fleet
    Świnoujście terminal
    Opis:
    Przedstawiono model optymalizacji struktury i harmonogramu kursowania floty statków do przewozu gazu skroplonego (LNG). Jako kryterium przyjęto minimalizację łącznych kosztów budowy floty i jej eksploatacji. Model może zostać zastosowany dla dowolnej trasy kursowania. Uwzględnia on ograniczenia wymiarów statków oraz zapotrzebowanie na gaz. Przedstawiono przykład zastosowania modelu dla terminalu w Świnoujściu.
    There is presented a model for optimizing the structure and schedule of traveling of a fleet of LNG tankers. As a criterion was assumed to minimize the total construction costs of the fleet and its operation. The model can be applied to any gas transportation route. It takes into account limits of vessels size and the demand for gas. There is shown an example of application of the model for terminal in Świnoujscie.
    Źródło:
    Postępy Nauki i Techniki; 2011, 9; 167-177
    2080-4075
    Pojawia się w:
    Postępy Nauki i Techniki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zbiór dopuszczalnych planów montażu wielkowymiarowych konstrukcji oceanotechnicznych
    Set of feasibile assembly plans of large - size marine structures
    Autorzy:
    Iwańkowicz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/340064.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Zarządzania Produkcją
    Tematy:
    montaż
    spawanie
    kadłub statku
    stocznia
    marine structure
    assembly
    welding
    position
    ship hull
    shipyard
    Opis:
    The aim of the article is presenting a mathematical model of the assembly process of large-size marine structures. Numerical encoding approach of essential features of the structure and welding methods is proposed. The model takes into account information about the geometry of the connections between elements and their orientation in space during the assembly process. Welding processes are characterized by positions range of their application. The assembly process is shown as a matrix form. Assembly planning is based on the allocation of welding processes into stages and the selection of welding method and assembly position for each stage. It is shown that a lot of such plans can be generated and many of them are unacceptable. Space of feasible plans is defined by set of constraints. These conditions verify that the assembly plan performs a task of welding of all joints and whether it is feasible for particular methods. The methods for calculating the impact of all conditions . an accurate deterministic and randomized approximate are proposed. It is shown that assumed conditions dramatically reduce the set of assembly plans. Moreover, the method of including additional conditions into the model according to the connections making sequence is presented. Sample calculations are shown in two examples . first that is extremely simplified, allowing for a full deterministic analysis of the problem, and a second that is more complex, requiring a partial approximate approach. The article indicates the possibility of using the optimization of the assembly plan. Furthermore, the set of applicable criteria is proposed.
    Źródło:
    Zarządzanie Przedsiębiorstwem; 2014, 17, 2; 17-25
    1643-4773
    Pojawia się w:
    Zarządzanie Przedsiębiorstwem
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of assembly plan for large offshore structures
    Autorzy:
    Iwańkowicz, R
    Powiązania:
    https://bibliotekanauki.pl/articles/101914.pdf
    Data publikacji:
    2012
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    structure
    technology
    prefabrication
    Opis:
    The paper proposes a method of numerical encoding of large welded structures with the use of multisets. The method takes the types of details and connections that occur in structures into consideration. Mathematical optimization model for multistage structure assembly schedule was defined. Comparative analysis of selected decision variants for sample constructions and details sets is presented.
    Źródło:
    Advances in Science and Technology. Research Journal; 2012, 6, 16; 31-36
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of multi-dimensional grouping to building steel stiffened shell structures
    Autorzy:
    Iwańkowicz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/260327.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    group technology
    assembly sequencing
    steel structures manufacturing
    Opis:
    In this paper the present state of grouping technology theory is discussed. Attention is paid to lack of publications on grouping methods based on linear operators instead of classical incidence matrices. A computation algorithm for generating three-dimensional groups has been proposed. Every group contains joined structures, working cells and final (output) structures. Operation of the algorithm has been compared with results gained from literature sources dealing with binary grouping. And, calculations based on real assembly sequencing of a set of ship hull sections, have been performed.
    Źródło:
    Polish Maritime Research; 2013, 1; 48-58
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Integration of ship hull assembly sequence planning, scheduling and budgeting
    Autorzy:
    Iwańkowicz, R R
    Powiązania:
    https://bibliotekanauki.pl/articles/101940.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    assembly sequence planning
    schedulling
    shipbuilding
    budgeting
    resource consumption
    ship hull
    Opis:
    The specificity of the yard work requires the particularly careful treatment of the issues of scheduling and budgeting in the production planning processes. The article presents the method of analysis of the assembly sequence taking into account the duration of individual activities and the demand for resources. A method of the critical path and resource budgeting were used. Modelling of the assembly was performed using the acyclic graphs. It has been shown that the assembly sequences can have very different feasible budget regions. The proposed model is applied to the assembly processes of large-scale welded structures, including the hulls of ships. The presented computational examples have a simulation character. They show the usefulness of the model and the possibility to use it in a variety of analyses.
    Źródło:
    Advances in Science and Technology. Research Journal; 2015, 9, 25; 12-19
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza wypadków nurkowych związanych z zamarzaniem automatów oddechowych
    An analysis of diving accidents related to the freezing of diving regulators
    Autorzy:
    Iwankiewicz, K.
    Iwańkowicz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/366403.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej
    Tematy:
    nurkowanie
    zamarznie automatów
    wypadki nurkowe
    diving
    free flow regulators
    diving accidents
    Opis:
    W artykule opisano zjawisko zamarzania automatów oddechowych, przedstawiono statystykę wypadków nurkowych oraz ich związek z zamarzaniem automatów. Przedstawiono także wyniki badań awaryjności automatów oddechowych związanych z zamarzaniem zarówno w laboratorium, jak i w warunkach rzeczywistych.
    The article describes the phenomenon of freezing of diving regulators and presents the statistics of diving accidents and their relation to regulator freeze-ups. The article also presents the results of failure frequency tests on diving regulators conducted in the laboratory as well as in real conditions.
    Źródło:
    Polish Hyperbaric Research; 2013, 1(42); 57-81
    1734-7009
    2084-0535
    Pojawia się w:
    Polish Hyperbaric Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Projektowanie stałoczasowej wieloprogramowej sygnalizacji świetlnej na podstawie badań empirycznych
    Designing of fixed-time multi-plan traffic lights system on the basis of empirical research
    Autorzy:
    Iwańkowicz, R.
    Taraska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/252530.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Naukowo-Wydawniczy TTS
    Tematy:
    skrzyżowanie
    sterowanie ruchem
    droga
    ruch drogowy
    intersection
    traffic control
    road
    road traffic
    Opis:
    W artykule scharakteryzowano problematykę sterowania ruchem na skrzyżowaniach potoków ruchu samochodowego i pieszego. Zwrócono uwagę na zagadnienie kolizyjności skrzyżowań i zagrożenia dla bezpieczeństwa uczestników ruchu. Zaproponowano rozwiązanie dedykowane niewielkim skrzyżowaniom o znacznej, powtarzalnej, zmienności natężenia. Metoda opiera się na algorytmie ewolucyjnym, którego rozwiązaniem jest plan pracy sygnalizacji świetlnej podczas całego cyklu podzielonego na fazy. Informacje o ruchu na skrzyżowaniu w różnych porach doby stanowią kluczowe dane wejściowe do obliczeń. Są one gromadzone podczas standardowych badań natężenia ruchu.
    The article describes the problems of traffic control at the crossroads of streams of automotive traffic and pedestrian. Attention was drawn to the issue of collisions at junctions and the danger for safety of road traffic participants. We proposed a solution dedicated for small junctions with significant, repeatable, variability of intensity. The method is based on evolutionary algorithm whose solution is a traffic lights work plan during whole cycle divided into separate phases. Information about traffic on junction in different times of the day pose entrance key data for calculations. They are collected during standard research of traffic intensity.
    Źródło:
    TTS Technika Transportu Szynowego; 2015, 12; 2596-2600
    1232-3829
    2543-5728
    Pojawia się w:
    TTS Technika Transportu Szynowego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi-objective evolutionary method for cargo arrangement in a loading space
    Autorzy:
    Taraska, M.
    Iwańkowicz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/223587.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cargo arrangement
    three-dimensional loading
    container packing
    evolutionary optimization
    układ ładunków
    ładowanie
    kontenery
    optymalizacja ewolucyjna
    Opis:
    The paper characterises a class of problems for packing boxes in the container. It presents the current state of knowledge in this area and distinguishes evolutionary algorithms, as the most promising in the search for quasi-optimal loading conditions. The method proposed in the paper focuses on certain criteria important from a practical point of view, which in a formalised manner have not been included so far in the solving-problems models. Apart from the traditional consideration of the problem of three-dimensional space loading maximisation, the proposed method considers the deviation of the loaded container weight centre from its symmetry planes and the availability of packages during unloading. New elements in the described method are: the applied criteria, penalty function, way of coding the container loading state in the evolutionary algorithm and fast crossover and mutations operators dedicated to the adopted coding. It was observed that the evolution in the developed algorithm occurs properly, that is seeking to minimise the criteria. The article also includes a calculation example showing the effect of the method with the discussion of the results indicating the advantages and disadvantages of the proposed solution. The performance of the algorithm has been considered in the context of time necessary to obtain the acceptable solution and quality of the obtained solution. It was found that the algorithm in its current form is a strong base for its further improvement.
    Źródło:
    Archives of Transport; 2017, 44, 4; 65-74
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Solving the problem of vehicle routing by evolutionary algorithm
    Autorzy:
    Iwańkowicz, R. R.
    Sekulski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/102797.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    vehicle routing
    travelling salesman
    genetic algorithm
    Opis:
    In the presented work the vehicle routing problem is formulated, which concerns planning the collection of wastes by one garbage truck from a certain number of collection points. The garbage truck begins its route in the base point, collects the load in subsequent collection points, then drives the wastes to the disposal site (landfill or sorting plant) and returns to the another visited collection points. The filled garbage truck each time goes to the disposal site. It returns to the base after driving wastes from all collection points. Optimization model is based on genetic algorithm where individual is the whole garbage collection plan. Permutation is proposed as the code of the individual.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 29; 97-108
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Risk measures of load loss during service of refrigerated containers in seaports
    Autorzy:
    Filina-Dawidowicz, L.
    Iwańkowicz, R.
    Rosochacki, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/223633.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    risk analysis
    transport chain
    refrigerated container
    seaport
    simulation
    ocena ryzyka
    sieć transportowa
    kontener chłodniczy
    port morski
    symulacja
    Opis:
    The presented paper is concerned with the problems of assessing the risk level for service chain of refrigerated containers in seaports. This issue has been examined with regard to the losses related to the loss of cargo’s qualitative values. The paper identifies the links in the service chain as well as related hazards and events resulting in losses. The term “chain” has been defined for the refrigerated container service chain. Material losses generated by the loss of cargo’s qualitative values have also been examined. The paper suggests and justifies functional and numeric risk measures. With regard to the examined process the study presents the elements of loss modelling methodology. The risk level has been evaluated using selected calculation examples, considering the impact of the probability of events resulting in losses.
    Źródło:
    Archives of Transport; 2015, 34, 2; 19-27
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of technological usefulness of panel production line in shipbuilding process
    Autorzy:
    Urbański, T.
    Graczyk, T.
    Taraska, M.
    Iwańkowicz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/259325.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    panel production line
    welding technology
    SAW
    SAW-tandem
    GMAW-tandem
    FCAW
    ship hull
    Opis:
    This paper presents assessment of technological usefulness of panel production line in prefabrication process of large ship hull sections, in which special attention is paid to producibility of welding operations. Basing on the assessment these authors worked out hierarchy of analyzed sequences of welding technological processes as well as production line stands used for the processes. The assessment was performed on the basis of analysis of a concept of panel production line based on real production lines functioning in shipbuilding industry, as well as technical documentation of typical hull sections of a multi-purpose ferry. The presented analysis took into account impact of technological - constructional parameters onto producibility of welding process of prefabricated sections. Among these parameters the following were numbered: mass of the sections and number of their elements, total length of welds, labour consumption, material consumption as well as linear heat input in welding operations. On the basis of the achieved results, places which worsen effectiveness of production line operation were identified, as a result it was possible to formulate proposals for modernization of flow prefabrication line for hull sections.
    Źródło:
    Polish Maritime Research; 2018, S 1; 134-144
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Review of assembly sequence planning methods in terms of their applicability in shipbuilding processes
    Autorzy:
    Taraska, M.
    Iwańkowicz, R.
    Urbański, T.
    Graczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/259760.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    assembly sequence planning
    ship hull
    welded structure
    method review
    shipyard
    Opis:
    The article characterises the sea-going vessel hull assembly processes and then reviews the existing assembly methods of mechanisms and welded ship structures. Classification of these methods is done with respect to selected criteria of their applicability to hull assembly. Selected methods are used for calculations performed on a model structure and exemplary database. The analysed aspects include the performance of calculation algorithms and the quality of the obtained solutions. Particular attention is paid to the need for reduction of experts’ participation in the planning process due to strong search space explosion effect. The performed analyses have enabled the authors to formulate assumptions for models which would be applicable in real assembly planning in shipyards, as well as to indicate areas of further research which would make it possible to better consider the specificity of production of large-size welded structures.
    Źródło:
    Polish Maritime Research; 2018, S 1; 124-133
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies